The Hollow Psalm manifests as a spectral resonance that vibrates with the accumulated voices of every competitor the Deadlands has culled. Its center is a cold, hollow void that absorbs all sound and warmth, creating an eerie silence palpable to those nearby. The tag emits a faint, ghostly light that pulses in rhythm with the culling's heartbeat, growing brighter during eliminations. When brought near other bag tags, it emits an audible hum that shifts pitch, harmonizing with the presence of fellow survivors or dissonating near those marked for oblivion.

The Hollow Psalm serves as a supernatural warning system across the Deadlands - when the culling is about to claim a competitor, the tag's spectral hum grows louder and more dissonant, alerting all nearby bearers of imminent danger. This creates a shared awareness of the culling's movement across leagues, binding survivors together through a common, haunting melody. Those who carry the tag can also hear faint whispers of the forgotten, gaining cryptic warnings about the dangers that lie ahead.